1 files changed, 62 insertions, 0 deletions
diff --git a/accessible/tests/browser/fission/browser_src_change.js b/accessible/tests/browser/fission/browser_src_change.js
new file mode 100644
index 0000000000..e97cda3cc3
--- /dev/null
+++ b/accessible/tests/browser/fission/browser_src_change.js
@@ -0,0 +1,62 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/* import-globals-from ../../mochitest/role.js */
+loadScripts({ name: "role.js", dir: MOCHITESTS_DIR });
+
+addAccessibleTask(
+  `<input id="textbox" value="hello"/>`,
+  async function (browser, iframeDocAcc, contentDocAcc) {
+    info(
+      "Check that the IFRAME and the IFRAME document are accessible initially."
+    );
+    let iframeAcc = findAccessibleChildByID(contentDocAcc, DEFAULT_IFRAME_ID);
+    ok(isAccessible(iframeAcc), "IFRAME should be accessible");
+    ok(isAccessible(iframeDocAcc), "IFRAME document should be accessible");
+
+    info("Replace src URL for the IFRAME with one with different origin.");
+    const onDocLoad = waitForEvent(
+      EVENT_DOCUMENT_LOAD_COMPLETE,
+      DEFAULT_IFRAME_DOC_BODY_ID
+    );
+
+    await SpecialPowers.spawn(
+      browser,
+      [DEFAULT_IFRAME_ID, CURRENT_CONTENT_DIR],
+      (id, olddir) => {
+        const { src } = content.document.getElementById(id);
+        content.document.getElementById(id).src = src.replace(
+          olddir,
+          // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+          "http://example.net/browser/accessible/tests/browser/"
+        );
+      }
+    );
+    const newiframeDocAcc = (await onDocLoad).accessible;
+
+    ok(isAccessible(iframeAcc), "IFRAME should be accessible");
+    ok(
+      isAccessible(newiframeDocAcc),
+      "new IFRAME document should be accessible"
+    );
+    isnot(
+      iframeDocAcc,
+      newiframeDocAcc,
+      "A new accessible is created for a IFRAME document."
+    );
+    is(
+      iframeAcc.firstChild,
+      newiframeDocAcc,
+      "An IFRAME has a new accessible for a IFRAME document as a child."
+    );
+    is(
+      newiframeDocAcc.parent,
+      iframeAcc,
+      "A new accessible for a IFRAME document has an IFRAME as a parent."
+    );
+  },
+  { topLevel: false, iframe: true, remoteIframe: true }
+);